JavaScript window.open() method is used to open a popup window. This popup window will place into the center of the screen.
- popupWinHeight: The height of pop up window on the screen.
- popupWinWidth: The width of pop up window on the screen.
Example 1: This example creates the pop up window without placing it into center.
html
<!DOCTYPE html>
<html>
<head>
<title>
Non-centered popup window
on the screen
</title>
</head>
<body>
<h1>GeeksforGeeks</h1>
<p>
Non-centered popup window
on the screen
</p>
<script>
function createPopupWin(pageURL, pageTitle,
popupWinWidth, popupWinHeight) {
var left = (screen.width ) ;
var top = (screen.height ) ;
var myWindow = window.open(pageURL, pageTitle,
'resizable=yes, width=' + popupWinWidth
+ ', height=' + popupWinHeight + ', top='
+ top + ', left=' + left);
}
</script>
'GeeksforGeeks Website', 1200, 650);">
GeeksforGeeks
</button>
</body>
</html>
|
Output:
- Before Clicking the button:
- After Clicking the button:
Center popup window: To center the popup window we are changing the values of parameters of open() method as follows:
- left = (screen.width – popupWinWidth) / 2
- top = (screen.height – popupWinHeight) / 4
Example 2: This example creates the pop up window and placing it into center.
html
<!DOCTYPE html>
<html>
<head>
<title>
Centered popup window
on the screen
</title>
</head>
<body>
<h1>GeeksforGeeks</h1>
<p>
Centered popup window
on the screen
</p>
<script>
function createPopupWin(pageURL, pageTitle,
popupWinWidth, popupWinHeight) {
var left = (screen.width - popupWinWidth) / 2;
var top = (screen.height - popupWinHeight) / 4;
var myWindow = window.open(pageURL, pageTitle,
'resizable=yes, width=' + popupWinWidth
+ ', height=' + popupWinHeight + ', top='
+ top + ', left=' + left);
}
</script>
'GeeksforGeeks Website', 1200, 650);">
GeeksforGeeks
</button>
</body>
</html>
|
Output:
- Before Clicking the button:
- After Clicking the button:
